ASHE PRESCOTT [Rocket]

Date	Name	Symbol	Type	Security	Shares	Price	Value	Ownership	Reported
11/07/2013	U.S. SILICA HOLDINGS, INC.	SLCA	Other (disposition)	Common Stock, par value $0.01	25.4k	$0.00	$0	See footnotes	11/07/2013
06/11/2013	U.S. SILICA HOLDINGS, INC.	SLCA	Sale	Common Stock, par value $0.01	13.8M	$18.76	$258.8M	See footnotes	06/11/2013
03/19/2013	U.S. SILICA HOLDINGS, INC.	SLCA	Sale	Common Stock, par value $0.01	9.8M	$21.12	$206.4M	See Footnotes	03/19/2013